Influence of added gelatin on the rheological properties of a Fucus vesiculosus extract

Voron’ko, Nicolay G.; Derkach, Svetlana R.; Kuchina, Yuliya A.; Sokolan, Nina I.; Куранова, Л. К.; Obluchinskaya, E. D.

doi:10.1016/j.fbio.2019.03.002

Cited by 14 publications

(11 citation statements)

References 46 publications

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“…Extraction and characterization of alginates of two brown algae species harvested from the Moroccan coast was investigated as well as their elicitor capacity to induce natural defense in date palm roots. The content of total sodium alginates of Fucus spiralis L. (FSSA) and Bifurcaria bifurcata R. Ross (BBSA) were higer than that reported for B. bifurcata (16%) harvested from Britain [19], F. visoculosis (19%) [20] and L. vadose (3-17.6%) [15], but lower than those reported for alginates from the species Ecklonia cava (35-38%), Laminaria digitata (40%) [21] and Durvillaea antarctica (53%) [22]. Structural characterization of BBSA by 1 H-NMR (Figure 1B) revealed a low M/G ratio (<1) correspond to higher amount of guluronic (G) than mannuronic acid blocks (M) with high proportions of GG blocks (Table 2).…”

Section: Discussionmentioning

confidence: 82%

Use of Alginate Extracted from Moroccan Brown Algae to Stimulate Natural Defense in Date Palm Roots

et al. 2020

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Our study aimed to search for seaweed polysaccharides able to stimulate date palm defense mechanisms. Extraction, purification, characterization, and elicitor activity of sodium alginate (FSSA and BBSA) from Moroccan brown seaweeds Fucus spiralis and Bifurcaria bifurcata were investigated. FSSA and BBSA were characterized by proton nuclear magnetic resonance spectroscopy (1H-NMR) and size exclusion chromatography (HPLC-SEC). The mannuronic acid/guluronic acid (M/G) ratio of FSSA was M/G = 0.92 indicating that FSSA contained 48% and 52% of mannuronic and guluronic acids respectively, and the M/G ratio of BBSA was 0.47 indicating that BBSA contained 32% and 68% of mannuronic and guluronic acids respectively. Elicitor activity of FSSA and BBSA was carried out by developing an innovative study model on the date palm. The elicitor capacities were evaluated by investigating phenolic metabolism including phenylalanine ammonia-lyase (PAL) activity and total polyphenol content in seedling roots of date palm maintained in alginates solution (FSSA and BBSA) at different concentrations. The results obtained show that the PAL activity and the phenolic compound content were significantly stimulated with 1 mg·mL−1 of FSSA and BBSA; after 1 day of treatment with FSSA, and after 12 h of treatment with BBSA. These results show clearly those alginates extracted from Moroccan brown algae induced in date palm roots the stimulation of natural defense mechanisms.

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Section: Discussionmentioning

confidence: 82%

Use of Alginate Extracted from Moroccan Brown Algae to Stimulate Natural Defense in Date Palm Roots

et al. 2020

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“… Note: (a) Herbreteau et al 33 ; (b) Biancarosa et al 21 ; (c) Lorenzo et al 14 ; (d) Voron'ko et al 34 ; (e) Olsson et al 35 ; (f) Yaich et al 15 ; (g) Morgan et al 36 ; (h) Sanchez‐Machado et al 37 ; (i) Rodde et al 38 ; (j) Sharma et al 13 ; (k) Barbosa et al 39 ; (l) Maehre et al 17 ; (m) Schmid et al 40 …”

Section: Methodsunclassified

Effects of energy storage by the seaweeds on their ecosystem

et al. 2021

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In marine environment, every species store energy for its own use and deliver it to its predator. Phytoplankton and seaweeds take place at the beginning of the food chain, grow in shallow waters with photosynthesis, and compete for the solar energy. Although the biomass of the phytoplankton amounts 1%‐2% of the total global plant carbon, they carry out more than 40% of the global photosynthesis. In the food chain, the largest amount of exergy is destroyed and the largest amount of entropy is generated while going from the first to the second species in the food chain, most probably because of the conversion of the plant cell into an animal cell. Results of this study indicated that the chemical nature of the stored material, for example, fat, protein, or carbohydrate, is not related with the location of the species in the food chain. Global production of macroalgae was approximately 3 million tons in 2012, and their consumption is projected to reach 13 million tons by 2050. If the energy available for the phytoplankton should be stored by the seaweeds grown in man‐made farms in irrational amounts, competition of the seaweeds with the phytoplankton may be a major blow to marine ecology.

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“…The concentration of fucose as an estimation of the FSPs or fucoidans was performed according to the method described by Usov et al [41], with the modifications previously described by Garcia-Vaquero et al [8], Skriptsova [42], and Voron’ko et al [43]. Briefly, the fucose standards (0.005 to 0.1 mg/mL) and extracts (diluted to fit the calibration points) were hydrolysed using concentrated sulfuric acid in water (6:1, H 2 SO 4 :H 2 O) for 10 min at 100 °C in a water bath.…”

Section: Methodsmentioning

confidence: 99%

Enhancing the Extraction of Polysaccharides and Antioxidants from Macroalgae Using Sequential Hydrothermal-Assisted Extraction Followed by Ultrasound and Thermal Technologies

et al. 2019

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Fucose sulphated polysaccharides (FSPs) and glucans have recently attracted the attention of the scientific community due to their wide range of biological activities. Both polysaccharides should ideally be selectively extracted using innovative technologies with high extraction efficiency. This study aims to: (1) Optimise the extraction variables used in hydrothermal-assisted extraction (HAE) to obtain high yields of FSPs, total glucans, and antioxidants from Laminaria hyperborea; (2) to apply these optimised protocols to other brown macroalgae; and (3) to explore the application of ultrasound and thermal technologies to increase the recovery of polysaccharides from the residual biomass. Box-Behnken design (three-factor, four-levels) was employed to optimise the HAE variables, and principal component analysis was used to evaluate the recovery of polysaccharides from the residual biomass. The optimal HAE conditions were 120 °C, 80.9 min, and 12.02 mL/g macroalgae from L. hyperborea. The best sequential application of ultrasound and thermal treatment achieved an additional 2971.7 ± 61.9 mg fucose/100 g dried macroalgal residue (dmr) from Ascophyllum nodosum and 908.0 ± 51.4 mg total glucans/100 g dmr from L. hyperborea macroalgal residues.

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Influence of added gelatin on the rheological properties of a Fucus vesiculosus extract

Cited by 14 publications

References 46 publications

Use of Alginate Extracted from Moroccan Brown Algae to Stimulate Natural Defense in Date Palm Roots

Use of Alginate Extracted from Moroccan Brown Algae to Stimulate Natural Defense in Date Palm Roots

Effects of energy storage by the seaweeds on their ecosystem

Enhancing the Extraction of Polysaccharides and Antioxidants from Macroalgae Using Sequential Hydrothermal-Assisted Extraction Followed by Ultrasound and Thermal Technologies

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